Strategic Housing Land Availability Assessment (SHLAA) - EXTERNAL

An annual external release of the Strategic Housing Land Availability Assessment (SHLAA) data, published at the end of each financial year. The dataset, produced by the Government Digital Service, identifies and assesses sites with potential for residential development to help local authorities maintain a flexible housing land supply. It includes assessments of site suitability and potential development timelines, though it does not determine final planning decisions.

Use Cases

• Identify potential residential development sites based on the SHLAA's suitability assessments.
• Analyze the timing of when housing land might become available for development.
• Support local housing land supply planning based on the flexible and responsive supply framework.
• Map geospatial locations of assessed land parcels for strategic urban development.

Strengths

• Data is published annually, suggesting a regular update cycle.
• Assesses multiple dimensions: site suitability and potential development timeline.
• Available in multiple formats (KML, ZIP, CSV, JSON) for different analysis needs.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Last update date is unknown; freshness unverified.

Provenance

Source

Government Digital Service

Collection Method

Compiled by Local Planning Authorities as part of the statutory SHLAA process.

Time Range

Annual releases, specific years unknown.

Freshness

Published annually at the end of each financial year.

Geography

Likely covers areas under the jurisdiction of UK Local Planning Authorities.